Help wanted on identification RK winner

[Odulf]

For some time I have this puzzle, a small (5.5 x 5.5) photo, with 3 men: left a Major (Bat. Cdr.?), centre a Unteroffizier with RK, right a Oberleutnant (Comp. Kdr.?).

All men are wearing the Infantry Assault Badge in silver, and both officers have a 3 digit number on their shoulderboards.

Hence, the Unteroffizier must be an Infantryman, in the first half of the war (because the regimental numbers on the shoulderboards became obsolete in about 1942).

When I purchased the photo, some one wrote in pencil on the back Willi Lücke (this is incorrect, but Willi Lüke was a Pioneer Uffz. who won the RK on 16-11-44).

Below I will show the photo and a detail of the Lieutenants shoulderboard, and a pucture of the reverse.

The photo was removed from an album, and as much of possible of the glue and paper has been removed. Can any one decypher the text, because this will reveal the name of the Unteroffizier?

Your help is very much appreciated!